Commit Graph

32 Commits

Author SHA1 Message Date
Mark Salyzyn fc148f7f33 liblog: add IF_ALOG_RATELIMIT
IF_ALOG_RATELIMIT()
    ALOGE("Only one message globally using IF_ALOG_RATELIMIT()"
          " in the process may appear ever ten seconds,"
          " (%s)", strerror(errno));

static time_t last; /* initial state zero */
IF_ALOG_RATELIMIT_LOCAL(60, &last)
    ALOGE("Only one message locally may appear every minute,"
          " (%s)", strerror(errno));

These new calls are guaranteed not to affect the value of a
non-zero errno to simplify logging of errors.  However, the
ALOGE calls in the above examples may update the errno value
upon their return.

Test: gTest liblog-unit-tests --gtest_filter=liblog.__android_log_ratelimit
Bug: 33535908
Change-Id: Id8cc192fc7d14504ffd418933cf88ae945c089f2
2016-12-21 21:36:14 +00:00
Mark Salyzyn 472245d962 liblog: move android_log_event_context class to log/log_event_list.h
rename class from android_log_event_context to android_log_event_list

Test: gTest logcat-unit-tests
Bug: 31992412
Bug: 31456426
Change-Id: Ib61cbca7d453837d64959c56b0e11f8c5edbfbdd
2016-11-21 09:46:34 -08:00
Mark Salyzyn aeaaf81c2c liblog: logd: logcat: Split out log/logger.h into public and private.
log/logger.h pieces moved into log/log.h.  Correct for some
minor Android Coding standards.

Test: gTests liblog-unit-tests, logd-unit-tests and logcat-unit-tests
Bug: 19235719
Bug: 26552300
Bug: 31289077
Bug: 31456426
Change-Id: I0a19fd8788eec20a582e72e4c62c04534bdb1b9a
2016-10-24 11:12:49 -07:00
Mark Salyzyn 749a298dfd liblog: restructure log/log.h and android/log.h
We went too far, so this is a partial revert, part deux.

Keep general purpose logging macros in android/log.h for the NDK.
More internal features like Radio, System and Events logging are
moved back to log/log.h.  Correct liblog ndk symbols.  Correct for
some Android Coding standards.

Test: compile
Bug: 31992412
Change-Id: Id3731496fa226e8c170305d0d2a1859e8cf67e14
2016-10-24 11:03:49 -07:00
Mark Salyzyn 6584d0a35a liblog: Replace log/log.h with android/log.h
Move all liblog related content into android/log.h, and make
log/log.h points to android/log.h.

Test: Compile
Bug: 26552300
Bug: 31289077
Change-Id: I858e0ebe047b86f2a8530a99bc9c380d3d58edbb
2016-09-30 12:47:05 -07:00
Mark Salyzyn a166708d15 liblog: logcat: Replace log/logd.h with log/log.h
Should use log/log.h and in some cases android/log.h instead. Can
not remove file because still in use by partners, so log/logd.h
points to log/log.h.

Test: Compile
Bug: 26552300
Bug: 31289077
Change-Id: I3580d46154617abb7231027a44f4ab9ee023febf
2016-09-30 12:47:05 -07:00
Colin Cross 412ad0dad8 Hide gnu extension warnings in log/log.h
system/core/include is included in the global include path using
-isystem, which hides all warnings.  Fix warnings in log/log.h
in preparation for moving from -isystem to -I.

log/log.h uses gnu extensions for zero-argument variadic macro token
pasting, which clang warns about with -Weverything.  Hide the warnings
using pragmas.

Test: m -j native
Bug: 31492149
Change-Id: Ib2113f877d811a6ecc0e91c035640b506f04bd86
2016-09-16 11:13:20 -07:00
Alex Vakulenko 3b0d65ad10 Change remaining Android logging macros to use C99 varidaic syntax
Most of the system/core/include/log/log.h file uses the C99 syntax of
variadic macros (that is, '...' in parameter list and __VA_ARGS__
in arguments). Except for andoid_printLog and android_printAssert
which still uses GCC custom extension syntax.

Switched the remaining macros to use C99 syntax. GCC extension syntax
makes my editor's code parser puke.

BUG: None
Change-Id: Ia6ebc0f2044b64182c425b179da0229c7046be4a
2016-04-27 14:44:40 -07:00
Mark Salyzyn 67d7eafd56 liblog: add android_log_write_string8_len
android_log_write_string8_len(android_log_context ctx,
                              const char *value, size_t maxlen)

Caps the supplied string to a maxlen length. Alter API to handle
a NULL pointer for the value string for this and
android_log_write_string8() and instead of returning -EINVAL,
act like a null string "" was supplied to preserve the list
location. API is also changed to report the number of characters
actually placed into the android_log_context.

Bug: 27356456
Bug: 19235719
Change-Id: I6a03d405eac1d741555dd05555513ec691e7a46e
2016-02-25 12:29:32 -08:00
Mark Salyzyn bd1ad049b2 liblog: event log list logging handler
Based off an initial request and effort by williamluh@google.com

- Added the following functions:

* Composing and Writing:

android_log_context create_android_logger(uint32_t tag)

int android_log_write_list_begin(android_log_context ctx)
int android_log_write_list_end(android_log_context ctx)

int android_log_write_int32(android_log_context ctx, int32_t value)
int android_log_write_int64(android_log_context ctx, int64_t value)
int android_log_write_string8(android_log_context ctx, const char *value)
int android_log_write_float32(android_log_context ctx, float value)

int android_log_write_list(android_log_context ctx, log_id_t id)

* Reading and Interpreting:

android_log_context create_android_log_parser(const char *msg, size_t len)

android_log_list_element android_log_read_next(android_log_context ctx)
android_log_list_element android_log_peek_next(android_log_context ctx)

* Destroy context used above:

int android_log_destroy(android_log_context *ctx);

- Added unit gTests

We moved implemented android_log_buffer_to_string() to the test since
it is an alternate for already existing logprint functionality.
Please move into liblog should it be of some common use, otherwise
as is it is a good means of stessing the reading and interpreting
handlers.

Signed-off-by: Mark Salyzyn <salyzyn@google.com>
Bug: 19235719
Change-Id: I4aa1927e8e6a75f0a129d15a27c891cf1ccd4f5c
2016-02-22 16:04:41 -08:00
Elliott Hughes 3a84b685e9 Remove unused cruft from <log/log.h>.
The callers are, in fact, already gone.

Change-Id: I665183ce595b542b1e47df79bc8990e069571b97
2016-01-16 11:11:19 -08:00
Mark Salyzyn 083b037c07 logd: liblog: logcat: Add LOG_ID_SECURITY
- Largish commit, buffer and access controls done together
- Add LOG_ID_SECURITY binary content log
- Add "default" meta buffer
- allow LOG_ID_SECURITY only from AID_SYSTEM and AID_ROOT UID & GID
- Use __android_log_security() to gate logging
- Add __android_log_security_bwrite() native access to security
  logging.
- Add liblog.__security_buffer end-to-end gTest

Bug: 26029733
Change-Id: Ibcf5b4660c17c1aa6902c0d93f8ffd29c93d9a93
2015-12-08 16:46:29 -08:00
Mark Salyzyn ffbd86ff25 liblog: Add __android_log_security()
Return non-zero if ro.device_owner is set and not false
and persist.logd.security is true.

Bug: 26029733
Change-Id: Ie82ae11ae35e9c79017b6e873fefb39d79a1d4fe
2015-12-08 11:28:27 -08:00
Mark Salyzyn 2d2e0a5c5e liblog: resolve deadlocks
Although ever present, an increased regression introduced with
commit b6bee33182 (liblog: logd:
support logd.timestamp = monotonic).

A signal handler can interrupt in locked context, if log is written
in the signal handler, we are in deadlock. To reduce the contention
and chances for this problem separate out timestamp lock from is
loggable lock to reduce contention situations. Provide a best-guess
response if lock would fail in timestamp path.

Use a common lock() inline within each module, with a comment speaking
to the issues surrounding calling a function that has a mutex within
a signal handler.

ToDo: Hold off signals temporarily in mainline, restart when unblock.
      Can not use pthread_sigmask(SIG_BLOCK,,) as it breaks AtCmd.

Signed-off-by: Mark Salyzyn <salyzyn@google.com>
Bug: 25563384
Change-Id: I47e2c87c988c3e359eb9eef129c6a3a08e9eedef
2015-11-19 13:14:16 -08:00
Mark Salyzyn c2e7d4965f Revert "liblog: resolve deadlocks"
This reverts commit 7a2a307192.

Bug: 25693940
Change-Id: I9a7c926289e972f80c03c92e33535e1dedaa7381
2015-11-16 19:00:41 +00:00
Mark Salyzyn 7a2a307192 liblog: resolve deadlocks
Although ever present, an increased regression introduced with
commit b6bee33182 (liblog: logd:
support logd.timestamp = monotonic).

A signal handler can interrupt in locked context, if log is written
in the signal handler, we are in deadlock. Block signals while we
are locked. Separate out timestamp lock from is loggable lock to
reduce contention situations. Provide a best-guess response if
lock would fail in timestamp path.

Bug: 25563384
Change-Id: I6dccd6b99ebace1c473c03a785a35c63ed5c6a8a
2015-11-12 15:39:04 -08:00
William Luh 964428c0a6 Add macro to call event logger for errors.
Bug:23180694
Change-Id: I566a290334345f48013029534efef3e08e726e40
2015-08-26 15:59:06 -07:00
Mark Salyzyn 440e109d64 liblog: Add kernel log id
Change-Id: I53002f05a8bdf8d67e1d761c56c8761d3b534a76
2015-05-06 08:54:59 -07:00
Jeff Brown 44193d9eae Add float support to binary event log.
Bug: 20664753
Change-Id: Ib4752bd785496dab5bb4d4979d5d80f662adbdfa
2015-04-28 18:20:48 -07:00
Mark Salyzyn 4ff2545525 log: Add check for LINT_RLOG
In order to make it easier to find radio system logging
mistakes, if LINT_RLOG is defined we will remove all the
definitions for ALOG* and SLOG*, as well as the log ids
to introduce compile and link errors.

Bug: 20143912
Change-Id: I1511bdce75213f3a5bacdbc4f2ab315aa1fa56fc
2015-04-10 11:28:16 -07:00
Andreas Gampe f45bbe496f log.h: Fix typo
Change-Id: I6b5e9bc9d40e5e5ecf9f50f7392675391e6f18e6
2015-02-09 16:13:33 -08:00
Mark Salyzyn 1df92e523e log.h: wrap android_testLog around __android_log_is_loggable
- take android_testLog from the bonepile and resurrect
- android_testLog is used, and makes sense in its current context
  as a holder for Android Logging policy.
- Default level when not specified is ANDROID_LOG_VERBOSE for
  eng and userdebug, and ANDROID_LOG_DEBUG for user.

NB: Properties, which are associated with __android_log_is_loggable are
not to be adjusted in user release; it would be useful at that juncture to
return a constant of (0) for VERBOSE, and a (1) for others on user builds.
Or default level to drop to ANDROID_LOG_DEBUG for all in future.

Bug: 17760225
Change-Id: I420b5b8a94d53d664c6a8b13546ebc424a147923
2015-02-09 15:37:32 -08:00
Mark Salyzyn f5af82edf3 log.h: deprecate CONDITION
- replace CONDITION with __predict_false to match with bionic

Change-Id: Ica23fe41cf9a7ea5eaf1b8552780af9ec7827808
2015-02-09 15:25:48 -08:00
Mark Salyzyn 956870518e liblog: add __android_log_is_loggable()
- Add new liblog API __android_log_is_loggable(prio, tag, def)
- future plan to integrate this into the runtime checks and into
  the logd daemon for filtration. Inert for now.

Bug: 17760225
Change-Id: I16395b4d42acc08f0209f55a1cbf87b0b2112898
2015-02-09 22:12:59 +00:00
Yabin Cui 4a6e5a3b64 Kill HAVE_PTHREADS.
Bug: 19083585
Change-Id: Ic09eb3dd250bc5c5b63cac7998f99f5fa007f407
2015-01-27 14:23:22 -08:00
Nick Kralevich 2a4d05a4e3 implement LOG_EVENT_STRING
Implement LOG_EVENT_STRING, so that native code can create new
event log entries. This is needed to support logging SELinux denials
to the event log.

Change-Id: I6a269a832bc2f5e5da6c9dbd169ed2f901b49166
2014-07-01 12:22:04 -07:00
Mark Salyzyn 99f47a9e7c logd: liblog: logcat: debuggerd: Add LOG_ID_CRASH
Change-Id: Iea453764a1a4fc1661f461f10c641c30150e4d20
2014-04-16 15:38:50 -07:00
Colin Cross 810d19f99a log: add compile-time checking when ALOGV is disabled
Wrap the call in a if (0) when verbose logging is disabled
to provide compile time checking.

Also add a printf format attribute to the function to warn
if parameters are incorrect.

Change-Id: Ic77edeadcc4d886ca0f8b434f8550e18e22d5901
2014-02-09 21:59:24 -08:00
Mark Salyzyn 819c58a8ca liblog: Add liblog test suite
(cherry picked from commit 8d1fdb5093)

Change-Id: Ia457d518b4e7ff37e840336ff0c48583709700d4
2014-01-27 15:17:39 -08:00
Mark Salyzyn f387fa5df0 liblog: drop use of sys/cdefs.h
(cherry picked from commit c96a44888a)

Change-Id: I44ea5d6b572e3712c301e6ebf4b34e6225d7e18b
2014-01-27 15:13:17 -08:00
Mark Salyzyn 4295841ebe liblog: Interface to support abstracting log read
(cherry picked from commit 6c1b07fbbd)

Change-Id: Iedc55c1316029b4bb72f51cc656b53b0e3f90aee
2014-01-27 15:10:39 -08:00
Colin Cross 9227bd3855 Move liblog headers to system/core/include/log
Move the liblog headers to log/ instead of cutils/ to complete
the separation of libcutils and liblog.  cutils/log.h still
exists and includes log/log.h in order to support the many existing
modules that use cutils/log.h.

Change-Id: I2758c9f4aedcb809ca7ba8383d0f55041dd44345
2013-07-24 12:32:39 -07:00